Ravi Kiran V wrote: can anybody please let me know what does this Line meant to be exactly
@WebService annotation marks a Java class as implementing a Web service

The @WebService annotation tells the web service stack (that is handling web service stuff in the server to which the web service is deployed) that this class is a web service endpoint implementation class.
A web service endpoint implementation class is the first code in your application, except for any handlers, that is invoked when the web service endpoint in question receives a request.
Hope this helps!